DuraTrax Onyx 255 AC/DC  Dual Balancing Charger for LiPo / NiCd / NiMH Battery Packs with Standard, Star Plug, and Electrifly Balance Board Adapters and AC and DC Power Cords Two independent outputs - so you can charge a pack or two packs of different chemistries at the same time. Simple, push-button setup with confirming visual and audio cues. Safety timer and solid-state reverse polarity and current overload protection. Memory for storing up to 10 battery charging routines per output - 20 in all. Charge rates of up to 6A for faster recharging.